112402181 has 4 divisors (see below), whose sum is σ = 119014092. Its totient is φ = 105790272.

The previous prime is 112402153. The next prime is 112402183. The reversal of 112402181 is 181204211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66569281 + 45832900 = 8159^2 + 6770^2 .

It is a cyclic number.

It is not a de Polignac number, because 112402181 - 2²² = 108207877 is a prime.

It is a super-2 number, since 2×112402181² = 25268500587113522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112402183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3305930 + ... + 3305963.

It is an arithmetic number, because the mean of its divisors is an integer number (29753523).

Almost surely, 2^112402181 is an apocalyptic number.

It is an amenable number.

112402181 is a deficient number, since it is larger than the sum of its proper divisors (6611911).

112402181 is an equidigital number, since it uses as much as digits as its factorization.

112402181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6611910.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 112402181 is about 10601.9894831112. The cubic root of 112402181 is about 482.6047358699.

Adding to 112402181 its reverse (181204211), we get a palindrome (293606392).

The spelling of 112402181 in words is "one hundred twelve million, four hundred two thousand, one hundred eighty-one".